Need AI added to your product, or a business workflow automated? I'll build it — and make sure it works in production, not just in a demo. Whether you're adopting Claude Cowork for your team, setting up an OpenClaw agent, or need a custom automation with Claude Code — I can fast-track you past the setup headaches and get you to a working system. WHAT YOU GET: — AI workflow automation: report pipelines, data extraction, content generation, competitive research — running on schedule without manual work — AI agent development: custom agents for your specific business process using Claude API, OpenAI, or open-source models — Claude Cowork / OpenClaw / Claude Code setup and integration for teams adopting these tools — iOS apps with AI features: from architecture to App Store (50+ apps shipped, #1 Top Grossing in 5 countries) TECH STACK: Python, AWS Lambda, Cloudflare Workers, Claude API, OpenAI API, Swift, SwiftUI, CoreML RECENT BUILDS: — Automated job discovery system with AI scoring and smart scheduling — OneDrive report generation pipeline (data pull → AI analysis → formatted delivery) — Multi-source research workflows with frequency analysis — iOS apps with AI chat interfaces, intelligent scoring, and on-device ML BACKGROUND: — Ex-Head of Engineering: 1M+ user app, 2M+ lines rewritten, team hired and led through acquisition — Chair of AI Committee: transformed a 60-person company from non-AI to AI-driven (1–2 → 6+ hrs/week saved per person) — Expert-vetted by Upwork (top 1%). Building production software since 2008 — 5.0 stars on every rated project. 28 jobs, 1,236 hours, $100K+ earned Let's talk about what you're building → book a consultation or message me.

You know it ain't easy running out of thrills \m/ How? I've got the answers for your whys & hows My focus on user pleasing started in 2005 after I modded Warcraft III assets into a successful free-to-play game. Meanwhile, I committed to connecting all the dots so an idea can be injected into a ready-to disrupt market using the latest Microsoft technologies. So if you have a concept of an app, I can make it real! Are you ready? I know I am. Alex

Web app developer building production web applications for B2B companies full-stack web apps, SaaS platforms, client portals and MVPs that ship as working software, not slide decks. Senior full stack web application developer. React / Next.js, Node, TypeScript, Python / FastAPI, Supabase / PostgreSQL, AWS. 126 projects, 100% Job Success, Top Rated Plus, $200K+ earned. Most companies don't need "an AI project." They need a web app that is fast, responsive, secure and maintainable with AI layered in only where it earns its place. WHAT I BUILD: ▪ Custom web app development: React/Next.js, Node, TypeScript, Python/FastAPI, PostgreSQL, Supabase, AWS, Docker ▪ SaaS web applications & MVPs: Multi-tenant architecture, user authentication, role-based access, Stripe billing, admin panels, analytics dashboards, client portals, internal tools ▪ Web app design & UI/UX: Responsive, mobile-first web application design from wireframe to production. UI/UX web app work and the front-end build handled by one person, so nothing is lost in handoff ▪ Progressive web apps: Installable, offline-capable PWAs that feel native without an app-store release ▪ Web optimization: Core Web Vitals, page speed, query and render performance, scaling an app that outgrew its first build ▪ Web application modernisation: Rebuilding no-code, page-builder and legacy builds as real React/Next.js applications ▪ API development & integrations: REST APIs, webhooks, Stripe, CRM sync, third-party services ▪ AI web apps, when the product actually needs it, RAG over your own data, LLM features, Claude/OpenAI and MCP integrations HOW I WORK: Two ways to engage: → Build a web app or MVP. You know what you want, a SaaS dashboard, a multi-tenant platform, a customer portal, an internal tool, a PWA. I architect it and ship it with tested, documented, maintainable code. Most MVPs ship in weeks, not quarters. → Clarity Audit (discovery first). Not sure where to start? I assess your product, data and workflows, then hand back a prioritised roadmap: realistic timelines, cost ranges, and the two or three highest-impact things to build first. AI-accelerated, human-led. I use modern tooling to move fast, but every web application ships with tests, documentation and code a senior engineer would sign off on. Clients who have been burned by no-code or page-builder builds hire me to rebuild them properly. WHERE I'VE DELIVERED: 126 Upwork projects across EdTech, Pharma, Real Estate, Logistics, Financial Services and CRM platforms membership portals with gated analytics, multi-portal web apps with role-based access, subscription platforms with mobile-to-web data sync, two-sided marketplaces with advanced search, B2B customer portals with order tracking, and multi-tenant SaaS. Based in Clearwater, Florida. US-based, native English, overlapping hours with US and EU teams. Send a message with your goal. On a 30-minute call I'll tell you whether you need a web app developer for a fixed-scope build or a Clarity Audit first.

CRO | CTO | STRIPE CONNECT | STRIPE BILLING | STRIPE RADAR | STRIPE API | STRIPE CHECKOUT | STRIPE TERMINAL | FINTECH | SAAS | AI | PAYMENTS | COMPLIANCE ( PCI DSS, GDPR) CRO | Meta Ads | Google Ads | ROAS | CAC XERO | QUICKBOOKS | ACCOUNTING SOFTWARE INTEGRATION FRACTIONAL CTO SERVICES | SCALABLE MVP DEVELOPMENT | REMOTE TEAM LEADERSHIP | TECHNICAL ROADMAPPING | STRIPE CONSULTING & DEVELOPMENT | AI | AUTOMATION Fractional CTO | 17+ Years IT Leadership | FinTech & Healthcare | Scalable MVPs | Stripe & Payments Expert I bring 17+ years of experience in technology, 10 years in FinTech and 2 years in AI—leading startups from concept to scale. As a Fractional CTO, I specialize in architecting investor-ready MVPs, building and managing remote engineering teams, and aligning technical roadmaps with business milestones. My approach balances speed-to-market with the long-term stability investors expect. As a Certified Stripe Expert, I’ve delivered 200+ projects across SaaS, eCommerce, and healthcare, helping founders design, integrate, and optimize payments that drive revenue and meet global compliance standards. Beyond Stripe, I manage full product lifecycles, ensuring delivery on time, within budget, and aligned with growth objectives. I’m also passionate about AI-driven automation, applying conversational AI, intelligent bots, and no/low-code workflows to simplify operations and create scalable, cost-efficient systems. What I Offer: Fractional CTO leadership & technical roadmapping Stripe consulting, integration, and optimization Scalable MVP development with investor alignment End-to-end project & product management (Agile/Scrum) AI-powered automation for payments, SaaS, and operations If you’re looking for a CTO who blends deep technical expertise with executive strategy, I’d be glad to help shape and scale your product. SKILLS: ✓✓✓ Payment Gateway Integrations ✓✓✓ Payment Gateway Migrations ✓✓✓ Technical Roadmapping ✓✓✓ Startup Fundraising Support ✓✓✓ Cloud Architecture (AWS, GCP, Azure) ✓✓✓ Remote Team Leadership ✓✓✓ SaaS Architecture ✓✓✓ Healthcare Technology (HIPAA, HL7, FHIR) ✓✓✓ FinTech Compliance (PCI DSS, PSD2) ✓✓✓ Scalable MVP Development ✓✓✓ Vendor Management ✓✓✓ AI Software Development ✓✓✓ AI Agent Development ✓✓✓ No/Low Code Development • STRIPE • PAYPAL • Authorize.net • 2 Checkout • Sage Pay • Square • WorldPay • RazorPay • WeChat Pay • iDeal • Klarna • QuickBook TaxJar • Xero • AI • ChatGPT • LangChain Tech Stack & Leadership Capabilities ✓ DevOps & Infrastructure: CI/CD pipelines, Docker, Kubernetes, infrastructure-as-code (Terraform, Ansible), monitoring & observability (Datadog, Prometheus, Grafana). ✓ Cybersecurity & Compliance: Identity and access management, encryption standards, SOC2 & GDPR compliance, penetration testing oversight. ✓ Data & Analytics: Data pipelines, ETL, real-time processing (Kafka, Spark), business intelligence dashboards. ✓ Mobile Oversight: iOS/Android (Swift, Kotlin, React Native, Flutter) – leadership & architectural guidance. ✓ Scalability & Reliability: Microservices architecture, high availability (HA), disaster recovery (DR), event-driven systems. ✓ Product Strategy: Product-market fit, UX/UI oversight, customer-driven roadmaps, investor milestone alignment. Core Development Expertise: ✓ Languages & Frameworks: Python, Java, Node.js, Next.js, PHP, Java EE (Servlet, JSP, EJB, Hibernate, Spring). ✓ Web & CMS: WordPress, WooCommerce. ✓ Databases: MySQL, Oracle. ✓ Cloud: AWS, GCP, Azure. ✓ OS: Linux, Windows. ✓ Front-End: JavaScript, jQuery, AJAX, Node.js. ✓ APIs & Integrations: REST APIs, ChartMogul, Twilio, Mailchimp, HubSpot, Facebook Graph, Google Maps, Twitter. ✓ Video Handling: Cloudflare Stream (direct upload, processing, secure playback). ✓ Tooling & Automation: Jenkins, MQ, Agile/Scrum workflows.

You’re not looking for a developer. You’re looking for someone who can understand the problem and deliver a working product. That’s exactly what I do. I’m a Senior Software Engineer with 10+ years of experience building mobile apps, backend systems, and scalable architectures. I’ve worked on products used by 10M+ users, including large-scale mobile applications and IoT ecosystems. Recently I worked on the Tapo mobile application (TP-Link) where I developed features for smart home devices, including IoT integrations and Bluetooth communication with hardware devices. I also build full-stack products from scratch. For example, I developed Jst4, a service AI marketplace platform that includes: • mobile apps built with Flutter • backend microservices written in Go and Python • Stripe payment integration • scalable service architecture • modern frontend using Next.js I work across the entire product stack and specialize in turning complex ideas into clean, scalable, production-ready systems. Core expertise: • Mobile development: Flutter, Android (Kotlin) native, iOS (Swift) native • Backend systems: Go, Python, microservices architecture • Web: Next.js • Payments and integrations: Stripe, APIs, third-party services • IoT development and Bluetooth device communication My approach is simple: Understand the real problem. Design the right architecture. Build a reliable product that scales. No unnecessary complexity. Just results. If you’re looking for someone who can design and build a complete product — from architecture to production, I’d be glad to help.

I build production-grade mobile and backend products in a fraction of the time they usually take. Not by cutting corners, but the opposite: I've built this exact kind of system enough times that I already know where the load-bearing decisions are, and I use agentic tooling to move through the rest fast. The result is a multi-tenant SaaS with real data isolation, Stripe billing wired end to end, MFA, and a clean mobile client, shipped in weeks rather than the quarter it usually eats. That compression is the whole point. It's the difference between an idea that reaches real users while it still matters and one that's still in development when the moment passes. I'm a senior engineer from Meta and T-Mobile, and what I actually sell is judgment. On any build there are a handful of decisions that are cheap to get right up front and brutally expensive to undo later: how tenants are isolated, how auth is structured, how Stripe handles the refund and the failed webhook nobody tested. I find those first, get them right, and build outward from there. Most of the job is knowing which decisions those are, and I've made them enough times to see them coming. Because I read architecture quickly, I'm also good at walking into a stalled build. If you've already paid a cheap team once and it demos fine but falls apart the moment real users or real money show up, I can audit what's there, tell you plainly what's salvageable and what isn't, and get it to production. Cheap work is cheap because the hard calls got skipped, and those are exactly the calls I'm fast at spotting. I'll be straight with you about whether you're looking at a save or a rebuild. Core stack: Flutter, Next.js, Supabase (Postgres, RLS, PostGIS), Stripe (Connect, checkout, portal, webhooks), plus the surrounding cloud and API work. I'd rather go deep on a deliberate set of tools than claim to do a little of everything. How I work You get senior judgment on your specific problem, not a feature factory. I find the highest-stakes decision in your architecture, get that one right, and build outward. I communicate clearly, deliver when I say I will, and document as I go, so nothing important ever lives only in my head. Education Master's Degree, Computer Science Bachelor's Degree, Computer Science If you're building something new, or trying to rescue something that isn't holding together, tell me what you're building and the part of it that's giving you the most trouble.

We build high-converting SaaS MVPs using Bubble.io. I run Booster Cartel, a Silver Tier Bubble Partner based in Scottsdale, AZ. We specialize in SaaS, web app, and mobile app development & design. We offer free mockups for your idea. Reach out now! We build custom features like user dashboards, Stripe payments, quoting tools, onboarding flows, admin panels, and booking systems. Our team works with early-stage founders, coaches, agencies, and SaaS companies to turn ideas into working products. Projects include clean design, fast communication, and scalable systems. Most MVPs are delivered in 6-12 weeks. We offer flexible options: hourly development, fixed-price builds, and white-label partnerships. Tools & integrations: OpenAI, Zapier, Stripe, Airtable, SendGrid email, Twilio SMS, Firebase, Google Sheets, and virtually any publicly available API.

I build production AI systems: LLM agents, RAG pipelines, inference infrastructure, and AI-powered products. My recent work includes ML infrastructure for an a16z-backed AI research lab (model deployment, evaluation pipelines across 199+ benchmarks), a fiduciary-grade zero-knowledge AI platform now serving paying customers, and agentic systems running in production today. 12+ years building production software. 50+ products shipped across 12 industries. $900K+ earned on Upwork with 100% Job Success, and an average client engagement over 3 years, clients stay because I deliver. What you get with me: technical leadership and hands-on execution from the same person. I design your architecture, build your AI integrations, ship production code, and leave you with something your team can own. No handoffs, no gap between the strategist and the person writing the code. On the AI side, I go well beyond API wrappers: production RAG systems, multi-agent workflows, intelligent model routing for cost and performance, and inference infrastructure for AI research teams. I bring the same depth to high-concurrency backends, complex payment platforms, and modern web applications that need to scale. I work primarily in TypeScript, Python, and Go across React, Next.js, Node.js, and AWS. I've shipped enough systems to know what compounds and what becomes technical debt, which means faster time to production with fewer costly architectural mistakes. I work with everyone from early-stage startups to engineering teams inside larger companies. If you're building something with AI, or something ambitious that needs to actually ship, let's talk. U.S.-based | Available now for projects, sprints, and fractional engagements.

I've been analyzing, designing, and developing software applications in varied environments for over thirty years. Most of these environments integrated a GUI or Web-based front-end with a relational database on the backend. I've also configured and managed systems and networks, and consulted with clients on these issues, at need. My experience in database, system and network administration help me make design choices to avoid conflicts and performance problems due to backend bottlenecks. Most recently, I've been highly involved in the development and support of multiple highly-available, web-hosted applications utilizing web, Windows, Android and iOS client devices with clustered, redundant Microsoft SQL Server instances as the data store. Backend processes were performed by T-SQL jobs and Windows services and application written in VB.Net and C#.

I help businesses eliminate manual work through automation and custom no-code apps. ⚡️ 8 hours of work → 30 minutes. ⚡️ 120-second app sync → 15 seconds, after optimizing performance. 💰 $2,880/year in tools → $240/year, with better performance. 💰 $9,600/year on a part-time VA → $240/year with Make com That’s what happens when your systems are built the right way. At Systent, we’ve helped 200+ businesses replace messy workflows with systems that actually fit how they operate. Most businesses we work with are dealing with: • Inventory or attendance errors that cost real money • Field staff collecting data on-site and waiting for the office to send a quote • Data scattered across spreadsheets, apps, and tools that never sync • Staff spending hours copy-pasting the same data every single day • Tools that don't talk to each other, causing delays and mistakes • Paying for software that forces your team to adjust instead of supporting your workflow • Stuck waiting on developers who take months to deliver something simple • Not fully maximizing tools you're already paying for like Google Workspace We fix that by building: • Inventory and attendance tracking • Custom internal apps (mobile & web) • Business process automation • Data entry systems • Google Workspace integrations • Custom CRMs TOOLS WE USE: • Airtable • Google AppSheet • Google Apps Script • Google Gemini • Make • n8n • Zapier OUR CLIENTS • Parcel Revenue • Capital Shack Funding • Diamond Support • Smithey Ironware • Mega A Builders WHAT OUR CLIENT SAY: ⭐️⭐️⭐️⭐️⭐️ “We tried CRMs like Pipedrive, Follow Up Boss, GoHighLevel, HubSpot, and Salesforce, but none matched our needs. The custom CRM that Systent built works perfectly for us.” ⭐️⭐️⭐️⭐️⭐️ “Systent helped us streamline our data entry. What used to take 8 minutes per deal now takes just 30 seconds. That means what used to take 8 hours of work can now be done in just 30 minutes.” ⭐️⭐️⭐️⭐️⭐️ “We were stuck with an app that took around 120 seconds to sync. After Systent optimized the expressions and data structure, the app now syncs in just 15 seconds.” Every week you wait is another week of hours lost to manual work. Let's get on a 30-minute call and map out what automation could look like for your business. 🚀